Drop-hammer



P. E. LANE.

DROP HAMMER.

APPLICATION FILED FEB. 28, m9.

1,337,520. Patented Apr. 20, 1920.

2 SHEETS-SHEET l- @Worm u P. E. LANE.

DROP HAMMER.

APPLICATION FILED FEB. 28. I9I9.

1,337,520. I Patented Apr. 20, 1920.

2 SHEETS-SHEET 2.

I `A L L IIIIlIIIIII. IIIIIII vwemboz PHILANDER E. LANE, OF ATLANTIC CITY, :NEW JERSEY.

DROP-HAMMER.

Specification of Letters Patent.

Patented Apr. 20, 192i).

Application led-February 28, i919. Serial No. 279,731.

To all wiwm t may Conce/rfa.'

Be it known that l, PHILANDER E. LANE, a citizen ot the United States, residing at Atlantic City, in the county orn Atlantic and State of New Jersey, have invented new and useful improvements in Drop-Hammers, of which the following is a specication.

lily present invention has to do with drop hammers, and pertains paricularly to hammers of the friction lift type.

An object is to provide a drop hammer with the hammer carryingstructure movably mounted on a crane, the device being thus adapted tor use a persuader or dumperf7 upon bending floor or in other connections where it is desirable to move the hammer to a proper operative relation with respect to tlieplate or other material being worked upon4 rather than shift the plate.

A further object resides in so constructingl the friction lii't and the release therefm that iese parts will operate elliciently irrespectiif'e of the adjusted position to which the hammer is shifted.

A still further object is to construct the hammer proper so that when striking a plate, anple, or the like with glancing` blon the uneven strain ot impact on the tace of the hammer will be taken up within the hammer structure .selil and undue strain will not be transmitted to the operating,` parts. n

TWith these and other objects in view, which will be apparent from the specilication, drawings and. claims, my present invention includes certain novel features ot' construe-tion and combinations ot' parts which will now be set torth.

ln the drawings:

Tiligure l is a view in side elevation illustrat-ing the device of my invention as it is set up 'for use.

ig'. 2 is an enlarged view in end elevao'l? the device.

'g. 3 is a view in side elevation ot the disc osare in Fig. 2,

Fig. is a fragmentary sectional view to better illustrate the crane car by which the hammer proper is carriel.

Fig. is a detail view illustratingthe compensating cushion within the hammer.

in the present illustration I have shown my invention embodied with a `iib crane, it being however understood that the invention tion is adaptable for use with other forms of crane or support.

rhe pivot pillar of the jib crane is shown at l, this pivot pillar being` journaled in bearings 2 and 3 which are mounted on any suitable supporting structure. The jib beam el. is secured to extend radially from the pivot pillar l, and brace rods 5 are provided to maintain beam d in true horizontal disposition and against sliding.

Jib beam Ll is a section of -beam or is made up ot other suitable material, and a car consisting` of side plates 5 and G connected by axles 7 and by wheels S and 9 journaled on these axles, is mounted to have traveling` movement on said beam. fin electric or lnid motor l0, or other suitable power means, is mounted on the inner end of beam el adjacent pivot pillar l, and the remaining portion ot this beam is clear for travel of the car.

i pinion ll mounted on the motor shalt meshes to drive a larger spur wheel l2 iXed on shaft 13. lThis shaft 'i8 is journaled at one end adiacent motor 10, and extends parallel with and above beam il, the outer end being' journaled in a bearing provided on standard le, Shaft 13 has a key-way l5 formed throughout the greater part or the length thereof inside of standard la, and a friction roll 1G has a key 17 received to slide in hey-way l5. Plate 6 has bearingl extensions l7 which are rereivcd upon shalft lon oppositey sides oiY friction roll 1G, and thus as the car is moved along beam i roll l5 is carriedtherewith. ln this movement ot' 1G the key l slides in key-way l5. and thus this roll is ixcd to turn with shaft '13. )L pairof bearing extensions 18 carried by plate 5 have an idler roll 179 journaled therein. and a second pair oiQ bearings 2G mount a bearing roll 2l to be spaced slightly ronr roll 19. .i set ot bearing` extensions 22 is carriedby plate (i somewhat spaced from bearingextensions 1T. and a pressure roll 23 is journaled therein. T his pressure roll is mounted to be adjustable in its disposition with respect to friction roll 16, and tlic'adjustment is accomplished through a lever Q-l, a cable or rod 25 being attached for manipulation or" this lever from a distance,

It is preferable that plates 5 and 6 extend somewhat below the lower edge of beam 4, and rollers 26 are carried by these plates to guard against upward movement and displacement of the car. Slide bearings 2? and 28 are provided on the lower extensions of plates 5 and 6 and are lined up vertically beneath the space between the rolls 19 and 21, and i6 and 23 respectivel ji cross-Y head 29 has friction boards or bars 80 and 3l rigidly connected therewith and extend ing in parallel spaced relation7 this spacing being suflicient to center up with slide bearings 27 and 2S and boards or bars 30 and 3l are shaped to slide freely within the bearings, these bearings guidingl the bo. or bars to be received between the sets of rolls. EL driving head or hammer blocl 32 is mounted from crossliead 29 by a king bolt 33, this head or block being` somewhat separated from the crossheach and rubber cushions 0r compensating springs are mounted between crosshead 29 and the head or block 32, and as king bolt 3S is loosely ra ceived through crosshead 29, movement of head or block 32 within the limits of siliency of the rubber cushions or springs is allowed. rlhis construction of cushioned head relieves some strain upon the parts du@l to the shock of impact the hammer dropsj compensates .for a glancing blow due the impact face of head or block 32 striking an angular or rounded surface, and causes a rebound of the hammer structure which will aid in the successive lift of the hammer.

ln the use of the device, the parts are assembled and mounted substantially as shown in Fig. l. and has been stated this mounting is adjacent a bending` slab floor or other surface on which metal plates, shapes, or the like are to be werke` The jib beam l is swung to be alined vertically over the material to be worked onmy and the car is then moved along` this beam to bring` the hammer structure over the particular point which blows are to be struclr. The motor l0 is started and by manipulation of cable or rod 25, operating lever 2a is shifted to throw pressure roller 23 into bearing contact with board or bar 6. is roll 23 bears against this board or bar, it is forced against friction roll 167 and as this roll is constantly revolving' force is exerted to raise the hammer. When the hammer has been lifted to the proper height7 proportioned by the force desired in the hammer blow, operating` lever 2li is shifted in an opposite direction and the hammer is released to drop. As the several bearing extensions by which the rolls are mounted are carried with the car structure, these parts will be maintained in proper relation irrespective of the location the car structure along beam a, and as key l? slides in lrey way l5 roll 16 is constantly revolved when motor l() is in operation.

lllhile in the foregoing, l have described specific embodiments, and have mentioned only certain possible modifications, it will be appreciated that my purpose is to provide a-drop hammer structure in which the hammer is carried by a jib or other crane to be adjustable, in view of which it is to be understood that in practice l do not limit yself to such specific details as herein set iorth, but may resort to any practical modifications falling?,` within the scope of the invention as defined in the appended claims.

l claim:

l. A, drop hammer including` with a crane aving` a swinging;` beam, a car mounted for novement along' said beam, a friction lift Lemmer having* friction bars associated herewith carried by said car, power means nXed on said beam adjacent the inner end thereof7 a shaft journaled on said beam and extending parallel therewith throughout length, said shaft being` driven by said power meansand having a hey-way extendthe l afi, Ifiction roll bearing aoain one of said A"ic-tima bars and b v which said hammer is lifted slidably mounted on said shaft and having a lrey sliding` in said key-way, and bearing` extensions y which said roll is moved when said car is moved.

2. drop hammer including` with a jib crane structure, a car mounted to travel over the outer extent of the beam of said crane, power means mounted on said beam at the inner end thereof7 a shaft driven by said power means `iournaled above and parallel with said beam7 said shaft having a lreyway formed longitudinally of the outer extent thereof and ertcnding` for length correspondingto the distance of travel of said car, a friction lift hammer structure held in operative position on said car by suitable slides and rolls. a friction roll slidably mounted on said shaft and having a lrev received in the hey-way thereof. extensions carried by said car move said friction roll the car is moved and to maintain the same all times in an operative position. and a pressure roll mounted adiacent said friction roll and shiftable to ren der the parts operative and inop Y tive.

ln testimony whereof my signature.

PHLANDER E. LANE, 

